578342077 has 4 divisors (see below), whose sum is σ = 578551356. Its totient is φ = 578132800.

The previous prime is 578342071. The next prime is 578342081. The reversal of 578342077 is 770243875.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 478121956 + 100220121 = 21866^2 + 10011^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-578342077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (578342071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100438 + ... + 106039.

It is an arithmetic number, because the mean of its divisors is an integer number (144637839).

Almost surely, 2^578342077 is an apocalyptic number.

It is an amenable number.

578342077 is a deficient number, since it is larger than the sum of its proper divisors (209279).

578342077 is a wasteful number, since it uses less digits than its factorization.

578342077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209278.

The product of its (nonzero) digits is 329280, while the sum is 43.

The square root of 578342077 is about 24048.7437717649. The cubic root of 578342077 is about 833.1597163466.

The spelling of 578342077 in words is "five hundred seventy-eight million, three hundred forty-two thousand, seventy-seven".